Usually small cracks in bridge concrete can be patched up. But with the gaping holes in the Ambassador Bridge, repair work is going to be more complex — and costly, Shaohong Cheng, a civil engineering professor at the University of Windsor, told CBC News in an interview.

One option is to replace the damaged section of the bridge, but that is difficult with the bridge's status as one of the busiest border crossings in North America, Cheng said.

Another remedy is a special network of sensors monitored by a team tracking weather and wind patterns to identify repairs as soon as they are needed.

On Thursday afternoon Mayor Drew Dilkens told members of the media that Transport Canada had sent inspectors to Windsor. The Transport Canada staff in the image above were seen near the intersection of Huron Church Road and Donnelly Street, but they did not confirm that they were inspectors. (CBC)

"The bottom line is cost, right?" Cheng said. "So, if funds, ample funds, are available, there could be more frequent inspections or more involved inspections."

Bridge debris has caused some problems for university students parking their cars underneath the bridge.

Karim Jomaa said some concrete fell on his Mercedes. Since then he's changed cars and moved his parking spot.

"I knew something was wrong when I found some concrete on the car," Jomaa said. "It started worrying me a little bit. I've seen they've added a walkway that takes care of the students, but again the cars are another concern that they need to address."